The S-300 pneumaticthree-dimensional cellophane packaging machine add the automatic press down through the automatic induction switch .we can adjust to another boxes size in 5 minutes. that is really. in china. only we have solved the problem that change another box size in 5 minutes we use ; It is suitable for many size boxes ;Our machines are cut by high precision laser cutting, the differences only 0- 0.5mm for box . all the parts made from aluminum or SUS 304.